• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An electric device for the control of yarn feeding devices for weaving machines, of the type providing for the presence of a yarn supply wound onto a drum and comprising an electric three-phase driving motor, wherein, in order to change the speed of said motor, this latter is supplied with AC voltage, phase controlled by triacs. For this purpose, three signals are used representing a selected speed for the motor, the true speed of the motor itself and, respectively, the presence of the yarn supply on the drum, said signals being compared and processed into an electronic circuit, in orderto produce signals forthe control of the said triacs. The said three signals are compared in a circuit generating a signal which must in turn be compared with three periodic ramp signals having the same phase and a period half those of the three supply voltages of the motor, in order to generate square wave signals for energizing the corresponding triacs.
    公开号:SU1340596A3
    申请号:SU823395199
    申请日:1982-01-25
    公开日:1987-09-23
    发明作者:Гиардо Фиоренцо
    申请人:Рой Электротекс С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    only on the surface 10 of the drum 6 will the required stock of the weft yarn, the signal f from the output of the sensor 9 becomes equal to zero. The electric motor is de-energized. A comparator is used to speed up the stopping of the motor shaft. Output signal f from the comparator output (if
    one
    The invention relates to textile industry, more specifically to electric devices for controlling the speed of the electric motor of the storage drum for feeding the weft yarn on weaving machines, for example, pneumatic ones.
    The purpose of the invention is to improve the control accuracy by increasing the speed.
    Figure 1 shows the kinematic diagram of the device; Fig. 2 shows a first embodiment of the motor control unit; FIGS. 3 and 4 show timing diagrams for the operation of the elements of the device; Fig. 3 shows a second embodiment of the motor control unit.
    The device contains a three-phase electric motor 1 of alternating current, the hollow shaft 2 of which is kinematically connected with the return guide tube 3. The weft thread (yarn) 4 is unwound from the reel 5, passes through the hollow shaft 2, the tube 3 and is wound on a thread storage drum 6, in front of which a disk 7 is mounted at an acute angle to the axis of the shaft 2. For fixing the drum 6, permanent magnets 8 are used. The yarn stock sensor 9 on the drum 6 is mounted to move along the axis of the drum, the outer surface 10 of which is made of reflective m the material.
    The device contains a power source 11, a control unit 12 and a shaft speed sensor 13. The power source 11 is three-phase and is connected via switch 14 to the inputs of the control unit.
    signal f 0) is equal to one. This single signal feeds the brake winding through an amplifier. The motor shaft 1 stops. After removing the yarn from the drum 6, the winding process is repeated. 2 hp f-ly, 5 ill.

    It consists of a control signal generation unit and a phase-pulse control unit.
    The phase-impulse control unit is made in the form of three identical nodes o /, / 5 and y, each; dD) W of which contains a series-connected zero detector 15, a sawtooth voltage generator 16 and a comparator 17. The output of each comparator 17 through the corresponding driver
    18 is connected to the control of the yogdim input of the corresponding cell T, T ,, and T., including semistor, commuting the corresponding winding I, II and III of the electric motor 1.
    The control signal generation unit 1 consists of an adder 19 and a comparator 20. The output of sensor 13 via a frequency converter 21 is voltage connected to the first inputs of the adder 19 and comparator 20, the second inputs of which are connected to the output of the electric motor rotational frequency setting 22, and the third to the output of the sensor 9 stock filament on the drum 6. The output of the adder
    19 is connected to the second inputs of the comparators 17, and the output of the comparator 20 through the amplifier 23 is connected to the brake winding 24. In the case of the power source 11 in the form of a three-phase transformer, the secondary windings of which are connected by a triangle, the zero detector 15 is connected to the R and S phases through the element 25 galvanic isolation (figure 2). If the secondary windings of the transformer are connected by a star (fig, 5) 5 then the element
    25 is not required due to the use of the neutral wire N.
    The device works as follows
    At the time of the device start-up (switch 14 is set to the appropriate position), the output signal of converter 21 is zero, since signal V is equal to zero
     Sp
    from the output of the rotational frequency sensor 13; In the presence of a signal f 1 from the output of sensor 9 (there is no signal on drum 6), the output signal conrR from the output of the adder 19 detects -15 chambers with the signal Vv, from the output of the setpoint generator 22
    For trodvig output l io is through the corpus callosum of the body in a skein and engine
    Form
    V signal
    COhTR
    (at f 1) the amplitude is always less than the maximum value of the output signal from the output of the generator 16. The generator 16 is triggered by the signal V, from the output of the detector 15. As a result, a sequence of pulses appears at the outputs a, a, and of the comparators 17 a, which includes seven dashes T, Tj, T, (they are open during the whole period T). The motor turns on and starts to pick up speed. As the motor shaft speed increases, the VPPP signal increases and the time t increases, corresponding to the turn off time of the twistors.
    Respectively decreases time
    -2
    on time
    semistors (time t, determined by the phase shift between the voltage Vj and the current consumption Ig-t) - With an approximate equality of signals V and Vcpp (motor in nominal mode), the output signal V is almost constant. The pulse sequence and has a duty cycle corresponding to the desired speed of the motor shaft.
    The weft thread 4 is folded into the spools 5 and through the tube 3 and the disc 7 is laid out along the length of the drum.
    6. As soon as the required stock of weft thread is located on the surface 10 of the bar-50 of the Control Unit connected to the outlet 6, the signal f from the output of the sensor 9 is zero. Since the signal f (in the absence of a thread margin) is always larger in amplitude of the signal V, then at f О the signal V in amplitude always becomes greater than the maximum value of the output voltage of the generator 16. Semistory
    chatel m
    off. The motor is de-energized.
    In order to accelerate the stopping of the motor shaft, a comparator 20 is used, the output signal f of which, if there is a signal f O at its input, is single, which, having passed through the amplifier 23, supplies the brake winding 24. The motor shaft stops. After winding the yarn from the drum 6, the winding process is repeated. The reverse of motor 1 is switched by.
    chatel m
    权利要求:
    Claims (3)
    [1]
    1. An electric device for controlling the speed of a motor of a thread accumulator for feeding a weft thread on a weaving machine, containing a three-phase power source, a three-phase AC motor, in each phase of which a twistor is installed, a thread reserve sensor on the thread-storage drum and a sensor and frequency adjuster of rotation of the three-phase electric motor AC motor, the outputs of which are connected to the corresponding inputs of the control signal generating unit, and the phase-pulse control unit About t l and h a35
    So that, in order to increase control accuracy by improving speed, the three-phase AC motor is provided with a brake winding,
    and the phase-pulse control unit is made in the form of three identical control units, each of which consists of a comparator and a series-connected detector and
    generator sawtooth voltage, while the inputs of each detector are connected to the corresponding outputs of the three-phase power source, the inputs of the comparator each
    five
    the house of the corresponding sawtooth generator and with the first output of the control signal generating unit, and the output is connected to the control input of the corresponding sevenistor, with the braking winding connected to the second output of the forg unit of the control signal.
    13405966
    [2]
    2. The device according to claim 1, about t l and -
    [3]
    3. The device according to claim 1, about t l and so that the stator winding of the electric motor is connected by a star.
    Of course, the stator winding of an electric motor is connected by a triangle.
    Of course, the stator winding of an electric motor is connected by a triangle.
    man
    CMYG
    Fig.Z
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    y "ff
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    Editor O. Golovach
    5
    Compiled by B. Kissin
    Tehred M. Khodanich Proofreader E. Roppso
    Order 4356/59 Circulation 424 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d.A / 5
     .. ".-- -
    Production and printing company, Uzhgorod, Projecto st., 4
    类似技术:
    公开号 | 公开日 | 专利标题
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    US3670976A|1972-06-20|Delivery device for threads on weaving machines, knitting machines, or the like
    US4586543A|1986-05-06|Device for the rotational drive of a weft prefeed and measurement apparatus in a shuttle-less weaving machine
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    SU1560456A1|1990-04-30|Device for winding thread
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    同族专利:
    公开号 | 公开日
    AT23652T|1986-11-15|
    EP0056954B1|1986-11-12|
    IT1135172B|1986-08-20|
    EP0056954A3|1982-08-11|
    DE3274321D1|1987-01-02|
    JPS57143545A|1982-09-04|
    EP0056954A2|1982-08-04|
    JPH0370024B2|1991-11-06|
    US4452402A|1984-06-05|
    IT8119318D0|1981-01-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1035559A|1964-11-12|1966-07-13|Asea Ab|A driving system comprising an alternating current motor|
    DE1919716C3|1969-04-18|1979-07-05|Era Elektronik-Regelautomatik Gmbh & Co Kg, 4800 Bielefeld|Arrangement for regulating the speed of an asynchronous short-circuit motor|
    GB1395889A|1971-12-03|1975-05-29|Howden Supertherm Ltd|Ac power control unit|
    US3796385A|1972-05-24|1974-03-12|Rosen K|Thread delivery method and apparatus|
    CH616902A5|1976-10-28|1980-04-30|Sulzer Ag|
    SE408890B|1977-11-14|1979-07-16|Aros Electronics Ab|KIT AND CONTROL SYSTEM KIT AND DEVICE|US4550754A|1983-06-29|1985-11-05|Nissan Motor Co., Ltd.|Weft picking system of loom and method for operating same|
    FR2548693B1|1983-07-07|1985-10-18|Saurer Diederichs Sa|ROTATION DRIVE DEVICE FOR WEFT PREDIVER AND MEASURER ON A NON-SHUTTLE WEAVING MACHINE|
    GB8327676D0|1983-10-15|1983-11-16|Bonas Machine Co|Yarn metering device|
    IT1176259B|1984-06-04|1987-08-18|Roy Electrotex Spa|WEFT FEEDER FOR WEAVING FRAMES|
    IT8422055V0|1984-06-04|1984-06-04|Roy Electrotex Spa|WEFT FEEDER FOR WEAVING FRAMES CONTAINING PERFECTED VEHICLES TO ACCUMULATE THE WEFT RESERVE.|
    DE3506490C2|1985-02-23|1987-01-02|Sobrevin Societe De Brevets Industriels-Etablissement, Vaduz, Li|
    DE3506489C1|1985-02-23|1986-08-28|Sobrevin Société de brevets industriels-Etablissement, Vaduz|Thread delivery device|
    JPH0410233Y2|1986-09-26|1992-03-13|
    SE8800839D0|1988-03-09|1988-03-09|Iro Ab|PROCEDURE AND DEVICE FOR SPEED CONTROL OF A FOURNISSOR FOR THE INTERMEDIATE STORAGE OF YARN, WIRE OR CLEAR|
    DE4407958A1|1994-03-09|1995-09-14|Iro Ab|Thread brake device|
    IT1311256B1|1999-10-26|2002-03-04|Lgl Electronics Spa|DEVICE AND METHOD OF HANDLING AND CONTROL OF THE WEFT WINDING ARM IN WEFT FEEDERS FOR WINDOW FRAMES|
    FR2867786B1|2004-03-22|2006-05-12|Rieter Textile Machinery Fr|DEVICE FOR MANAGING AN ELECTRICAL SUPPLY BREAK IN A TEXTILE MACHINE, IN PARTICULAR FOR WIRE TRANSFORMATION|
    CN107313163B|2017-08-04|2018-05-11|江苏科瑞德智控自动化科技有限公司|A kind of embedded braking vane of High Speed Rapier Loom|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT19318/81A|IT1135172B|1981-01-26|1981-01-26|ELECTRIC DEVICE FOR DRIVING WIRE FEEDING EQUIPMENT FOR TEXTILE MACHINES|
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